Edit: Wish I could have found the clip of him jumping the ferrari, much better than them just giving him the car. Anyways wish I could help but that sounds terrible and I have no idea what it could be... Hopefully one of the other guys has an idea

Trust me, i'm not looking to place blame, it's a losing battle. I'm just curious what the issue might be.

After starting it, there is a ton of raw fuel coming out of the exhaust. It's actually dripping, is it possible it can be an o2 sensor?

Probably a leaking injector. The fault codes you posted don't mean anything to me (generic codes), but usually raw fuel out the exhaust is an injector failure. Usually you will get various misfire codes, as well as either low/high pressure fuel sensor codes.

Be careful, as I've had N54's almost hydro-lock on me from fuel leaking into the cylinders from injector failure.

Probably a leaking injector. The fault codes you posted don't mean anything to me (generic codes), but usually raw fuel out the exhaust is an injector failure. Usually you will get various misfire codes, as well as either low/high pressure fuel sensor codes.

Be careful, as I've had N54's almost hydro-lock on me from fuel leaking into the cylinders from injector failure.

Thanks bmwm.d, I know from your posts you're extremely knowledgeable. I was getting a misfire on cylinder 4 multiple times it was only that cylinder. I had the car towed to the dealership and at minimum I'll pay the diagnostic fee and hopefully that will narrow down the issue.

What about the squeal at first? And is there any possibility of 02 sensor? I thought the 09s and laters had the updated injectors and less prone to issues.

Thanks bmwm.d, I know from your posts you're extremely knowledgeable. I was getting a misfire on cylinder 4 multiple times it was only that cylinder. I had the car towed to the dealership and at minimum I'll pay the diagnostic fee and hopefully that will narrow down the issue.

What about the squeal at first? And is there any possibility of 02 sensor? I thought the 09s and laters had the updated injectors and less prone to issues.

I rarely see 02 sensor issues on these cars. Doesn't mean one can't go bad, but my bet is on something else. If the exhaust smells like raw fuel, it's sure to be an injector issue.

I'm not exactly sure what that noise was when it first started -- but it could be something to do with the fuel system that's related to the root cause of your problem (injector, high-pressure fuel pump, etc.). I'd be chasing the performance/driveability issue first, and wouldn't be too concerned with the noise for now.

Just keep in mind, IF it is a leaking injector (and raw fuel is entering the exhaust system), you can have a bunch of secondary faults that can throw you. A while back I repaired a car with a leaking injector, and for quite a while afterwards I was still getting oxygen sensor and fuel trim faults from the residual fuel in the exhaust. The good news is you don't seem to be driving the car around like an idiot, so that's good. The last one I had actually melted a primary cat from extended driving with the injector failure.

I think I've posted this before, but most of the badly leaking injectors I see these days are on '09+ cars. I'm not sure why.... but the older style injectors don't seem to do this. Sure, they cause rough running on cold-start and misfires, but I don't think I ever saw an '07-08 car fail like that.

I rarely see 02 sensor issues on these cars. Doesn't mean one can't go bad, but my bet is on something else. If the exhaust smells like raw fuel, it's sure to be an injector issue.

I'm not exactly sure what that noise was when it first started -- but it could be something to do with the fuel system that's related to the root cause of your problem (injector, high-pressure fuel pump, etc.). I'd be chasing the performance/driveability issue first, and wouldn't be too concerned with the noise for now.

Just keep in mind, IF it is a leaking injector (and raw fuel is entering the exhaust system), you can have a bunch of secondary faults that can throw you. A while back I repaired a car with a leaking injector, and for quite a while afterwards I was still getting oxygen sensor and fuel trim faults from the residual fuel in the exhaust. The good news is you don't seem to be driving the car around like an idiot, so that's good. The last one I had actually melted a primary cat from extended driving with the injector failure.

I think I've posted this before, but most of the badly leaking injectors I see these days are on '09+ cars. I'm not sure why.... but the older style injectors don't seem to do this. Sure, they cause rough running on cold-start and misfires, but I don't think I ever saw an '07-08 car fail like that.

Good luck getting it taken care of....

Great call, so the dealership did some work on the car and swapped the 4th injector to cylinder five and the code moved to the 5th cylinder. So they're gonna look over things with the remainder of the diagnostics time but it seems to be a slam dunk that it's the injector.

What is your recommendation in regard to changing just one of the injectors? So 4 options.

A.) Swap 1 with the same model injector as the other 5
B.) Swap 1 with the newest model injector from BMW
C.) Swap 3 on the same bank with the same model injectors
D.) Swap 3 on the same bank with the newest model injectors.

Thanks again for your help, it made it an easy phone call to handle from the dealership knowing what to expect. And for the $100 diagnostics fee it saves me the time that I don't have to troubleshoot.

Also, does this probably mean it was just a coincidence that the injector went after the valet drove it. It doesn't seem like excessive driving would lead to an injector issue?

You can't mix the new style injector with the old and it's doubtful the dealership will even have the old style in stock (most got sent back to BMW). I'm afraid they're going to have to swap out all six and it's not going to be cheap -- probably at least $1500.

You can't mix the new style injector with the old and it's doubtful the dealership will even have the old style in stock (most got sent back to BMW). I'm afraid they're going to have to swap out all six and it's not going to be cheap -- probably at least $1500.

Just talked to the dealership and they have the 261s in stock which I think is the version right after the original. They have them for 120 each, I'm not even sure if that is my injector model being an 09 with an 01/09 build date.

Just talked to the dealership and they have the 261s in stock which I think is the version right after the original. They have them for 120 each, I'm not even sure if that is my injector model being an 09 with an 01/09 build date.

That's good the hear -- they can simply replace the failed injector then. 261 is the one you want.

Just talked to the dealership and they have the 261s in stock which I think is the version right after the original. They have them for 120 each, I'm not even sure if that is my injector model being an 09 with an 01/09 build date.

I haven't logged on in a couple days.....what did you end up doing?

If it were my car, I'd probably replace all with the updated design, but I like to do things the right/best way on my cars. You could just replace the 1 injector with a "261" part number (index number 10 or lower on injector) as a cheaper solution; if available. The earlier style injectors are all compatible with each other, so it doesn't matter what you have now as long as they aren't the updated 13 53 8 616 079 part number.

If it were my car, I'd probably replace all with the updated design, but I like to do things the right/best way on my cars. You could just replace the 1 injector with a "261" part number (index number 10 or lower on injector) as a cheaper solution; if available. The earlier style injectors are all compatible with each other, so it doesn't matter what you have now as long as they aren't the updated 13 53 8 616 079 part number.

Haven't got the car yet, been traveling this week for work so I'm going to get it tomorrow. I'm not one to usually go cheap on fixing something but $1200 to get all the new injectors vs. $120 for just the one. If another one craps out down the road, I'll probably then spring for 6 new model ones.